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    <p>Let's say you have a <code>CatalogViewController</code> (which is a subclass of <code>UITableViewController</code>) and a <code>ProductViewController</code> (which is a subclass of <code>UIViewController</code>).</p> <p>The simplest way to implement “swipe to next product” is to give the <code>ProductViewController</code> a reference to the <code>CatalogViewController</code>. It should be <code>weak</code> (if using ARC) or <code>assign</code> (if not using ARC). You will also want a property that holds the index of the product in the catalog:</p> <pre><code>@interface ProductViewController @property (nonatomic, weak) CatalogViewController *catalogViewController; @property (nonatomic) NSInteger productIndex; @end </code></pre> <p>Then in the action method for a swipe, you send a message to the <code>CatalogViewController</code> asking it to go to the next (or prior) product in the catalog:</p> <pre><code>@implementation ProductViewController - (IBAction)showNextProduct:(id)sender { [self.catalogViewController goToProductAtIndex:self.productIndex + 1]; } - (IBAction)showPriorProduct:(id)sender { [self.catalogViewController goToProductAtIndex:self.productIndex - 1]; } </code></pre> <p>In <code>CatalogViewController</code>, whenever you create a <code>ProductViewController</code>, you need to set those properties:</p> <pre><code>@implementation CatalogViewController - (ProductViewController *)productViewControllerForProductAtIndex:(NSInteger)index { if (index &lt; 0 || index &gt;= self.products.count) return nil; ProductViewController *vc = [[ProductViewController alloc] initWithProduct:[self.products objectAtIndex:index]]; vc.catalogViewController = self; vc.productIndex = index; return vc; } </code></pre> <p>and you implement the <code>goToProductAtIndex:</code> method like this:</p> <pre><code>- (void)goToProductAtIndex:(NSInteger)index { ProductViewController *vc = [self productViewControllerForProductAtIndex:index]; if (!vc) return; NSMutableArray *vcs = [[self.navigationController viewControllers] mutableCopy]; while (vcs.lastObject != self) [vcs removeLastObject]; [vcs addObject:vc]; [self.navigationController setViewControllers:vcs animated:YES]; } </code></pre> <p>You can use the same method to handle a table row selection:</p> <pre><code>- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { [self goToProductAtIndex:indexPath.row]; } </code></pre> <p>If you want to get more software-engineery, you can create a protocol around the <code>goToProductAtIndex:</code> method and use that to avoid making <code>ProductViewController</code> know about the <code>CatalogViewController</code> class.</p>
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    1. COthanks @rob. I'll try this solution and I'll let you know. Thanks!
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    2. COrob, I got an error message: "Finishing up a navigation transition in an unexpected state. Navigation Bar subview tree might get corrupted." and "Unbalanced calls to begin/end appearance transitions for <ProductViewController: 0x6d83740"
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    3. COMake sure all of your `viewWillAppear:`, `viewDidAppear:`, `viewWillDisappear:`, and `viewDidDisappear:` methods call their `super` methods.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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